Manual

DobotVisionStudio User Guide
Issue V4.1.2 (2022-06-08) User Guide Copyright © Yuejiang Technology Co., Ltd.
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• Threshold Mode: When the input image is a binary image, it is optional to not execute
binarization. In other cases, there are five options, including single threshold, double threshold, auto
threshold, soft threshold (fixed) and soft threshold (relative).
- Single threshold:
1. darker than background: [0, low threshold -1] blob target of gray value is
detected.
2. lighter than background: [low threshold, 255] blob target of gray value is
detected.
- Double threshold: when the high threshold is higher than the low threshold,
the target gray range is [low threshold, high threshold]. When the low
threshold is set higher than the high threshold, the target gray range is [0,
high threshold] and [low threshold, 255].
- Single threshold, double threshold or auto threshold
1. Low threshold: it is used to set lower limit of threshold.
2. High threshold: it is used to set upper limit of threshold.
- Soft threshold (fixed):
1. Lighter than background: the number of copies set between high and low
thresholds is divided into softness as the transition area. The area between [low
threshold, 254] is set to 1.
2. Darker than background: The area between [0, low threshold] is set to 1.
- Soft threshold (relative): blobs with fuzzy target edges and indistinct
features can be considered.
• Polarity: it has two modes, including dark blobs, light background, and light background
dark background.
- Dark blobs, light background is that the feature image pixel value is lower
than the background pixel value.
- Light background, dark background is that the feature image pixel value is
higher than the background pixel value.
• Threshold Range: it is used to set the lower limit and upper limit of threshold. The target
whose edge threshold within the threshold range, and it can be found in Blob area.
• Number of Fund Blobs : it is used to set the number of Blob graphs to find.
• Min. Hole Area: it refers to the minimum non-Blob area size in Blob area. If the parameter
is not larger than this value, the hole padding is the Blob.
• Contour Output Enable: Blob contour is displayed when enabled.
• Blob Image Output: do not output the Blob analysis image after disabled.
• Enable: If the current feature is enabled, the feature is used for blob filtering. If it is closed,
the feature will not be used for blob filtering.
- Area: the area of the target image.
- Contour: the circumference of the target image.